Man Linux: Main Page and Category List


       makemap - create database maps for sendmail


       makemap  [-C  file] [-N] [-c cachesize] [-d] [-D commentchar] [-e] [-f]
       [-l] [-o] [-r] [-s] [-t delim] [-u] [-v] maptype mapnam


       Makemap creates the database maps used by  the  keyed  map  lookups  in
       sendmail(8).   It  reads input from the standard input and outputs them
       to the indicated mapname.

       Depending on how it is compiled, makemap handles up to three  different
       database formats, selected using the maptype parameter.  They may be

       dbm    DBM format maps.  This requires the ndbm(3) library.

       btree  B-Tree  format maps.  This requires the new Berkeley DB library.

       hash   Hash format maps.  This also requires the Berkeley DB library.

       In all cases, makemap reads lines from the standard input consisting of
       two words separated by white space.  The first is the database key, the
       second is the value.  The value may contain ``%n'' strings to  indicate
       parameter  substitution.   Literal percents should be doubled (``%%'').
       Blank lines and lines beginning with ``#'' are ignored.

       Notice: do not use  makemap  to  create  the  aliases  data  base,  but
       newaliases  which  puts  a  special  token  into  the data base that is
       required by sendmail.

       If the TrustedUser option is set in the sendmail configuration file and
       makemap  is  invoked  as root, the generated files will be owned by the
       specified TrustedUser.

       -C     Use the specified sendmail configuration file for looking up the
              TrustedUser option.

       -N     Include  the null byte that terminates strings in the map.  This
              must match the -N flag in the ``K'' line.

       -c     Use the specified hash and B-Tree cache size.

       -D     Use to specify the character to use to indicate a comment (which
              is ignored) instead of the default of '#'.

       -d     Allow duplicate keys in the map.  This is only allowed on B-Tree
              format maps.  If two identical keys are read, they will both  be
              inserted into the map.

       -e     Allow empty value (right hand side).

       -f     Normally  all  upper case letters in the key are folded to lower
              case.  This flag disables that behaviour.  This is  intended  to
              mesh  with  the -f flag in the K line in  The value
              is never case folded.

       -l     List supported map types.

       -o     Append to an old file.  This allows you to augment  an  existing

       -r     Allow  replacement of existing keys.  Normally makemap complains
              if you repeat a key, and does not do the insert.

       -s     Ignore safety checks  on  maps  being  created.   This  includes
              checking   for   hard   or  symbolic  links  in  world  writable

       -t     Use the specified delimiter instead of  white  space  (also  for
              dumping a map).

       -u     dump (unmap) the content of the database to standard output.

       -v     Verbosely print what it is doing.


       sendmail(8), newaliases(1)


       The makemap command appeared in 4.4BSD.

                         $Date: 2008/05/02 23:07:48 $